Hybrid tea rose plant named `Ruioran`

ABSTRACT

A new variety of hybrid tea rose plant producing orange yellow flowers of good form and suitable for growing under glass.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct variety of roseplant of the hybrid tea rose class which was created by crossingundistributed, unnamed and unpatented seedlings as seed and pollenparents in De Kwakel, Holland. The varietal denomination of the newvariety is `Ruioran`. The new variety was isolated and asexuallyreproduced by budding in De Kwakel, Holland.

SUMMARY OF THE INVENTION

Among the novel characteristics possessed by this new variety whichdistinguish it from its parents and all other varieties of which I amaware are its attractive orange yellow flowers of good form borne on afloriferous plant with long stems and suitable for production of cutflowers under glass. The new variety has been reproduced throughpropagation by cuttings, grafting, budding and micropropagation.

Asexual reproduction by budding of the new variety as performed in DeKwakel, Holland shows that the foregoing and other distinguishingcharacteristics come true to form and are established and transmittedthrough succeeding propagations.

DESCRIPTION OF THE NEW VARIETY

The following is a detailed description of the new variety, with colorterminology in accordance with The Royal Horticultural Society ColourChart (R.H.S.C.C.) and horticultural terminology in accordance withstandard terminology used in UPOV-approved horticultural guideline. Theterminology used in color descriptions herein refers to plate numbers inthe aforementioned color chart. Phenotypic expression may vary dependingupon growing conditions under different climate, soil, and cultivationconditions.

Parentage: Seed and pollen parents are seedlings.

Class: Hybrid Tea.

As can be seen in Sheet 2 there is shown a new shoot and green bud, 1;compound three, five and seven leaflet leaves though only 6 leaflets areshown, one was broken and removed, 2, 3 and 4, respectively; a stem, 5;buds, 6, 7 and 8; a flower, 9, and flower stems 10, 11 and 12, withreproductive organs displayed.

The following further horticultural description is based on observationsmade of specimens grown under glass in De Kwakel, Holland.

Flower

Blooming habit: Nearly continuous.

A. Bud:

(1) Size.--Medium, about 3 to 4 cm long and about 3 cm wide.

(2) Form.--Ovate (shape of longitudinal section just before separationof sepals); urn-shaped after sepals part.

(3) Color.--As sepals divide, near 32A to 32B, with yellow toward pointof attachment.

(4) Sepals.--Medium to long, some foliated, medium green; undersurfacenear 144A, upper surface near 59B with greenish tonality near 146B.

(5) Peduncle.--Long, erect, very strong. Color near 137A to near 137B.

B. Bloom:

Flower.--Medium; viewed from above -- star-shaped; viewed from side --(a) upper part of fully opened flower, flattened convex; (b) lower partof fully opened flower, flat.

(1) Size.--Average size when fully expanded -- about 7 to 10 cm.

(2) Borne.--Singly, one to a stem.

(3) Form.--Exhibition type, somewhat flat top, spiral imbricated, outerpetals reflex to points and inner petals curl under.

(4) Petalage.--About 24.

(5) Color.--After sepals part and petals unfurl color of petalundersurface visible is near 32A to 32B with yellow at point of petalattachment, lightening to near 23A to 23C; as flower opens color remainsthe same but on petal top surface petalage near 33B to 33C becomesvisible. Open flowers appear near 23A to near 19A approaching near 26B.Overall tonality from a distance is attractive orange yellow to yellowblend.

(6) Peduncle.--Few hairs or prickles, near 138A to 138B; about 12 cm.

(7) Fragrance.--Very weak to weak.

(8) Length of stem*.--About 80 cm from last cuat.

(9) Production*.--About 230 blooms/m² /year.

Petals.--(1) Texture: Crisp. (2) Appearance: Inside velvety and outsidesatiny. (3) Form and size: Broad, medium, petals reflex to points. (4)Arrangement: Regularly arranged, imbricated. (5) Petaloids: About 10.(6) Lasting quality: Long-lasting quality on plant and after cutting;vase life varies from 8 to 18 days and blooms on plant last about 16days after which petals tend to drop.

Reproductive organs

A. Stamens, filaments and anthers:

Arrangement and color.--Regularly arranged around styles; color offilaments -- orange yellow.

B. Pollen:

Color.--Orange yellow.

C. Styles: Long, stigma above mouth of receptacle, yellow.

D. Stigmas: Yellow, positioned below anthers

E. Hip: Funnel-shaped; medium seed vessel at petal fall; green toorange, about 2 cm.

Plant

A. Form: Narrow, bushy, average disease resistance, may be subject topowdery and downey mildew; plant height about 1.8 meters, plant widthabout 0.5 meters.

B. Growth: Vigorous, medium length and width.

C. Foliage: Compound 3, 5 and 7 leaflets.

(1) Size.--Small to medium about 14 to 17 cm.

(2) Quantity.--Abundant.

(3) Color.--Juvenile foliage -- red purple to reddish brown; top near187A underside near 177A; weak anthocyanin coloration, (shoot about 20cm long); mature leaf color--upper side near 139A, under side near 197A.

(4) Shape.--Elliptic.

(5) Texture.--Upper side is medium glossy; underside is matte.

(6) Edge.--Serrate.

(7) Serration.--Serrate to double serrate.

(8) Leaf stem.--Color -- near 147A to 147B.

(9) Stipules.--Variable, short to long, variable margins, medium greenwith dark edge and/or tips, distinct auricle.

(10) Leaflets.--Cross section -- slight concave: medium to strongundulation of margin; terminal leaflet blade medium long and wide;terminal leaflet 3 -- leaflet leave, 8 to 9 cm; 5 -- leaflet leave, 6 to7 cm; 7 -- leaflet leaf, 4 to 5 cm, wedge-shaped base

D. Wood:

(1) New wood.--Color -- young shoots have weak anthocyanin; coloration-- bronze red purple to reddish brown; coloration near 165A.

(2) Old wood.--Color -- near 147A to 147B.

E. Prickles (thorns):

(1) Prickles.--Present; quantity (main stalk) -- very few; shape oflower side -- concave; Length -- short prickles, few to medium; longprickles few; Position -- irregular.

What is claimed is:
 1. A new and distinct variety of rose plant of thehybrid tea rose class, substantially as shown and described.